Improvement in lifting-jacks



H. n. SHERWOOD.-

LIFTI'NG JACK.

No.179.070. Patented June 20, 71876.

KJTyic/w #4 {K7 INV TOR ATTORNEYS HORACE H. SHERWOOD, OF FREDERIOKTOWN, OHIO.

IMPROVEMENT IN LlFTlNG-JACKS.

Specification forming part of Letters Patent No. 179,070, dated J une 20, 1876; application filed April 29, 1876.

To all whom it may concern:

Be it known that I, HORACE H. SHERWOOD, of Fredericktown, in the county of Knox and State of Ohio, have invented a new and'valuable Improvement in Lifting-Jacks; and I do hereby declare that the following is'a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

The figure. of the drawing is a representation of a perspective view of my lifting-jack.

This invention has relation to devices which are denominated lilting-jacks, which are especially designed for raising the axles of vehicles, and holding them up while removing or applying the wheels.

The nature of my invention consists in a vertical rack secured at right angles to a baseboard, to which a rectangular rod is rigidly secured, in combination with a lifting handlever, the shortest arm of which is connected by a swivel to thevertical portion of said angular rod, as I will hereinafter more fully explain.

In the annexed drawing, A designates the base-board of my improved lifting-jack, one end of which has rigid-1y secured to it a vertical rack, the teeth of which are pitched like those of a saw. This rack, which I have lettered B, has secured to its upper end one end of a rectangular rod, 0, the longestvertical arm of which is rigidly fixed into the basetical portion of the rod 0, thus allowing lever D to be adjusted up or down at pleasure.

The operation of my invention is as follows:

The short arm of the lever D is adjusted beneath the axle of the vehicle, near the wheel to he removed. The longest arm is then depressed until one end of the axle is raised the proper height, when said long'arm is adjusted beneath one of the teeth of the rack B. The weight upon the short arm of lever D will then cause the swivel E to bite firmly the vertical portion of the rod 0 and hold up the axle.

By detaching the long arm of the lever D from the teeth of the rack B, the swivel and its lever can be easily adjusted to any desired height and fixed in place, as above described. What I claim as new, and desire to secure by Letters Patent, is'

In combination with the rack B and angular rod 0, the lever D and swivel E, substantially as described. I

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

HORACE .H. SHERWOOD.

Witnesses KATE GBEENLEE, A. GREENLEE. 

